<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 输入框和按钮区域 -->
      <el-row :gutter="25">
        <el-col :span="9">
          <el-input
            placeholder="请输入内容"
            v-model="queryInfo.query"
            clearable
            @clear="getUserList"
          >
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getUserList"
            ></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true"
            >添加用户</el-button
          ></el-col
        >
      </el-row>

      <!-- 用户列表区域 -->
      <el-table :data="userList" style="width: 100%" stripe border>
        <el-table-column type="index" label="#" :resizable="false">
        </el-table-column>
        <el-table-column prop="username" label="姓名" :resizable="false">
        </el-table-column>
        <el-table-column prop="email" label="邮箱" :resizable="false">
        </el-table-column>
        <el-table-column prop="mobile" label="电话" :resizable="false">
        </el-table-column>
        <el-table-column prop="role_name" label="角色" :resizable="false">
        </el-table-column>
        <el-table-column label="状态" :resizable="false">
          <template v-slot="shuju">
            <el-switch
              v-model="shuju.row.mg_state"
              @change="userStateChange(shuju.row)"
            >
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column prop="mg_state" label="操作" :resizable="false">
          <template v-slot="shuju">
            <!-- 修改按键 -->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="small"
              @click="showDialogVisible(shuju.row.id)"
            ></el-button>
            <!-- 删除按键 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="small"
              @click="deleteUserById(shuju.row.id)"
            ></el-button>
            <!-- 分配角色按键 -->
            <el-tooltip content="分配角色" placement="top" :enterable="false">
              <el-button
                type="warning"
                icon="el-icon-setting"
                size="small"
                @click="setRole(shuju.row)"
              ></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :pager-count="5"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination>
    </el-card>

    <!-- 添加用户对话框 -->
    <el-dialog
      title="添加用户"
      :visible.sync="addDialogVisible"
      width="50%"
      @close="addDialogClosed"
    >
      <!-- 内容主体区域 -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="70px"
      >
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机号" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改用户对话框 -->
    <el-dialog
      title="修改用户"
      :visible.sync="editDialogVisible"
      width="50%"
      @close="editDialogClosed"
    >
      <!-- 内容主体区域 -->
      <el-form
        :model="editForm"
        :rules="editFormRules"
        ref="editFormRef"
        label-width="70px"
      >
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机号" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配角色的对话框 -->
    <el-dialog
      title="分配角色"
      :visible.sync="setRoleDialogVisible"
      width="50%"
      @close="setRoleDialogClosed"
    >
      <div>
        <p>当前的用户：{{ userInfo.username }}</p>
        <p>当前的角色：{{ userInfo.role_name }}</p>
        <p>
          分配新角色：<el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option
              v-for="item in rolesList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id"
            >
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  name: 'Users',
  data() {
    // 检验邮箱合法性
    var checkEmail = (rule, value, callback) => {
      // 检验邮箱的正则表达式
      const emailRef = /^[a-zA-Z0-9_-]+@[a-zA-Z0-9_-]+(\.[a-zA-Z0-9_-]+)+$/
      if (emailRef.test(value)) {
        return callback()
      }
      callback(new Error('邮箱格式错误'))
    }

    // 检验手机号合法性
    var checkMobile = (rule, value, callback) => {
      // 检验手机号的正则表达式
      const mobileRef =
        /^(13[0-9]|14[01456879]|15[0-35-9]|16[2567]|17[0-8]|18[0-9]|19[0-35-9])\d{8}$/
      if (mobileRef.test(value)) {
        return callback()
      }
      callback(new Error('手机号格式错误'))
    }
    return {
      // 获取用户列表的参数对象
      queryInfo: {
        query: '',
        // 当前的页数
        pagenum: 1,
        // 当前每页显示多少条数据
        pagesize: 2,
      },
      userList: [],
      // 总共条数
      total: 0,
      // 添加用户对话框是否显示
      addDialogVisible: false,
      // 添加用户表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: '',
      },
      // 添加表单验证规则对象
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          {
            min: 3,
            max: 10,
            message: '长度在 3 到 10 个字符',
            trigger: 'blur',
          },
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          {
            min: 6,
            max: 15,
            message: '长度在 6 到 15 个字符',
            trigger: 'blur',
          },
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          {
            validator: checkEmail,
            trigger: 'blur',
          },
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          {
            validator: checkMobile,
            trigger: 'blur',
          },
        ],
      },
      // 修改用户对话框是否显示
      editDialogVisible: false,
      // 查询到的用户信息对象
      editForm: {},
      // 修改表单验证规则对象
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          {
            validator: checkEmail,
            trigger: 'blur',
          },
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          {
            validator: checkMobile,
            trigger: 'blur',
          },
        ],
      },
      // 分配角色对话框是否显示
      setRoleDialogVisible: false,
      // 需要被分配角色的用户信息
      userInfo: {},
      // 所有角色的数据列表
      rolesList: [],
      // 选中的角色id
      selectedRoleId: '',
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    // 获取用户列表
    async getUserList() {
      const { data: res } = await this.$http.get('users', {
        params: this.queryInfo,
      })
      if (res.meta.status !== 200) {
        // 提示错误
        return this.$message({
          duration: 2000,
          message: '获取用户列表失败！',
          type: 'error',
        })
      }
      this.userList = res.data.users
      this.total = res.data.total
      // console.log(res)
    },
    // 监听 pageSize 的改变事件
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听页码值改变事件
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 监听开关状态的改变
    async userStateChange(userInfo) {
      // console.log(userInfo)
      const { data: res } = await this.$http.put(
        `users/${userInfo.id}/state/${userInfo.mg_state}`
      )
      if (res.meta.status !== 200) {
        userInfo.mg_state = !userInfo.mg_state
        return this.$message({
          duration: 2000,
          message: '更新用户状态失败！',
          type: 'error',
        })
      }
      this.$message({
        duration: 2000,
        message: '更新用户状态成功！',
        type: 'success',
      })
    },
    // 监听添加用户对话框的关闭事件
    addDialogClosed() {
      // console.log(this)
      this.$refs.addFormRef.resetFields()
    },
    // 添加用户
    addUser() {
      // console.log(this.$refs.addFormRef.validate)
      this.$refs.addFormRef.validate(async (vaild) => {
        if (!vaild) return
        // 发起添加用户的网络请求
        const { data: res } = await this.$http.post('users', this.addForm)
        if (res.meta.status !== 201) {
          return this.$message({
            duration: 2000,
            message: '添加用户失败！',
            type: 'error',
          })
        }
        this.$message({
          duration: 2000,
          message: '添加用户成功！',
          type: 'success',
        })
        // 隐藏对话框
        this.addDialogVisible = false
        // 重新渲染用户列表
        this.getUserList()
      })
    },
    // 展示编辑用户的对话框
    async showDialogVisible(id) {
      const { data: res } = await this.$http.get(`users/${id}`)
      if (res.meta.status !== 200) {
        return this.$message({
          duration: 2000,
          message: '查询用户信息失败！',
          type: 'error',
        })
      }
      this.editForm = res.data
      // 显示对话框
      this.editDialogVisible = true
    },
    // 监听修改用户对话框的关闭事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户
    editUser() {
      this.$refs.editFormRef.validate(async (vaild) => {
        if (!vaild) return
        // 发起修改用户数据的网络请求
        const { data: res } = await this.$http.put(
          `users/${this.editForm.id}`,
          {
            email: this.editForm.email,
            mobile: this.editForm.mobile,
          }
        )
        if (res.meta.status !== 200) {
          return this.$message({
            duration: 2000,
            message: '修改用户失败！',
            type: 'error',
          })
        }
        // 提示修改成功
        this.$message({
          duration: 2000,
          message: '修改用户成功！',
          type: 'success',
        })
        // 隐藏对话框
        this.editDialogVisible = false
        // 重新渲染用户列表
        this.getUserList()
      })
    },
    // 根据ID删除用户
    async deleteUserById(id) {
      const confirmResult = await this.$confirm(
        '此操作将永久删除该用户, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning',
        }
      ).catch((err) => err)
      //  如果用户确认删除，则返回值为 confirm
      //  如果用户取消删除，则返回值为 cancel
      // console.log(confirmResult)
      if (confirmResult !== 'confirm') {
        return this.$message({
          duration: 2000,
          message: '取消删除用户！',
          type: 'info',
        })
      }
      const { data: res } = await this.$http.delete(`users/${id}`)
      if (res.meta.status !== 200) {
        return this.$message({
          duration: 2000,
          message: '删除用户失败！',
          type: 'error',
        })
      }
      this.$message({
        duration: 2000,
        message: '删除用户成功！',
        type: 'success',
      })
      this.getUserList()
    },
    // 展示分配角色的对话框
    async setRole(userInfo) {
      this.userInfo = userInfo
      // 在展示对话框前，获取所有角色列表
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        // 提示错误
        return this.$message({
          duration: 2000,
          message: '获取角色列表失败！',
          type: 'error',
        })
      }
      this.rolesList = res.data
      this.setRoleDialogVisible = true
    },
    // 点击确定，分配角色
    async saveRoleInfo() {
      if (!this.selectedRoleId) {
        return this.$message({
          duration: 2000,
          message: '请选择要分配的角色！',
          type: 'error',
        })
      }
      // 保存分配的角色
      const { data: res } = await this.$http.put(
        `users/${this.userInfo.id}/role`,
        {
          rid: this.selectedRoleId,
        }
      )
      if (res.meta.status !== 200) {
        // 提示错误
        return this.$message({
          duration: 2000,
          message: '设置角色失败！',
          type: 'error',
        })
      }
      this.$message({
        duration: 2000,
        message: '设置角色成功！',
        type: 'success',
      })
      // 重新渲染用户列表
      this.getUserList()
      this.setRoleDialogVisible = false
    },
    // 监听分配角色对话框的关闭事件
    setRoleDialogClosed() {
      this.selectedRoleId = ''
      this.userInfo = {}
    },
  },
}
</script>
